To find out how many percent of computers have the Microsoft operating system installed, we need to add up the percentage of computers that have Windows XP and Windows 7 installed.
First, let's find out how many percent of computers have both Windows 7 and Linux installed:
85% (Windows 7) - 6% (Windows 7 & Linux) = 79% (Windows 7 only)
Next, let's find out how many percent of computers have both Windows XP and Linux installed:
20% (Windows XP) - 4% (Windows XP & Linux) = 16% (Windows XP only)
Finally, let's add up the percentage of computers that have Windows XP and Windows 7 installed:
79% (Windows 7 only) + 16% (Windows XP only) = 95%
So, 95% of the company's computers have the Microsoft operating system installed.
Answer:
o calculate the percentage of computers with the Microsoft operating system installed, we need to find the total number of computers that have either Windows XP or Windows 7 installed.
Microsoft Windows XP operating system is installed on 20% of the company's computers, so 20% of the computers have Windows XP installed.
Microsoft Windows 7 is installed on 85% of computers, so 85% of the computers have Windows 7 installed.
Linux and Microsoft Windows 7 are installed on 6% of computers, so 6% of the computers have both Windows 7 and Linux installed.
Microsoft Windows XP and Linux on 4% of computers, so 4% of the computers have both Windows XP and Linux installed.
All three programs are installed on 2% of computers, so 2% of the computers have all three programs installed.
To avoid double-counting the computers that have both Windows 7 and Linux installed, we need to subtract 6% from the total number of computers with Windows 7 installed. The same applies to the computers that have both Windows XP and Linux installed, so we need to subtract 4% from the total number of computers with Windows XP installed.
The total number of computers with Windows XP or Windows 7 installed is 20% + (85% - 6%) + (20% - 4%) = 20% + 79% + 16% = 115%.
So, 115% of the company's computers have the Microsoft operating system installed.
Step-by-step explanation:
a force of 192 lb is required to hold a spring stretched 3 ft beyond its natural length. how much work w is done in stretching it from its natural length to 9 inches beyond its natural length?
The work required to stretch the spring from its natural length to a distance of 9 inches beyond its natural length is 2.25 lb-ft.
The problem involves calculating the work required to stretch a spring from its natural length to a distance of 9 inches beyond its natural length, given that a force of 192 lb is required to hold the spring stretched 3 ft beyond its natural length.
To solve the problem, we use the formula for the work done by a force that varies with distance, which is given by:
W = (1/2) k (x2^2 - x1^2)
where W is the work done, k is the spring constant, x1 is the initial distance, and x2 is the final distance.
In this case, the initial distance is the natural length of the spring, which is 0 ft, and the final distance is 9/12 ft. To find the spring constant, we use the fact that a force of 192 lb is required to hold the spring stretched 3 ft beyond its natural length, which gives us:
192 = k * 3
Solving for k, we get k = 64 lb/ft.
Substituting the values into the formula, we get:
W = (1/2) * 64 * (9/12)^2
Simplifying, we get:
W = 2.25 lb-ft
This calculation shows how the work done by a force that varies with distance can be calculated using the spring constant and the distances involved.
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graphing systems of equations
graph equation and state the solution (the point where they intersect)
pls pls pls help i’m ripping my hair off trying to solve this
The system of linear equations represented in the graph have (b) ne solution at (-3, 1)
How to determine the number of solutionsFrom the question, we have the following parameters that can be used in our computation:
0 = y - x - 4
3y + 9 = -4x
The above system represents two linear functions
The point of intersection of the linear functions represent the solution
In this case, the linear functions intersect at (-3, 1)
See attachment for graph
Hence, it has one solution at (-3, 1)
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among 8 electrical components exactly one is known not to function properly. if 2 components are randomly selected, find the probability that at least one does not function properly.
The probability that at least one component does not function properly when 2 components are randomly selected from 8 is 1/4, or 0.25.
The total number of ways to select 2 components from 8 is:
C(8,2) = 8! / (2! (8-2)!) = 28
Now, let's find the probability that at least one component does not function properly. We can find this probability by subtracting the probability that both components function properly from 1.
The probability that the first component functions properly is 7/8, since there are 7 working components out of 8. The probability that the second component also functions properly, given that the first component does, is 6/7, since there are 6 working components left out of 7. Therefore, the probability that both components function properly is:
(7/8) * (6/7) = 6/8 = 3/4
So the probability that at least one component does not function properly is:
1 - 3/4 = 1/4
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a rectangular piece of cardbord of dimensions
A rectangular piece of cardbord has 3D dimensions.
What is the definition of a rectangle?Rectangles are enclosed 2-D shapes with four sides, four corners, and four right angles.Equal and parallel opposite sides make up a rectangle.
What are the properties of a rectangle ?The rectangle's properties are listed below:
There are four vertices and four sides.Every vertex has a 90-degree angle.The opposing sides have parallel and equal sides.Intersect each other diagonally.The perimeter of an object is equal to twice its combined length and width.Its area is calculated as the product of its length and breadth.It is a parallelogram and has four right angles.All inner angles added together equal 360 degreesTo know more about Rectangular visit;
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The measure of <2 is 5 less than 4 times the measure of <1. Find the measures of all the angles. answer pls
If the measure of <2 is 5 less than 4 times the measure of <1. The measure of angle <1 is 37 degrees, and the measure of angle <2 is 143 degrees. The measure of angle <3 is 55 degrees.
How to find the measures of all the angles?Let's call the measure of angle <1 "x".
From the problem, we know that:
4 times the measure of angle <1 is equal to the measure of angle <2 plus 5:
4x = measure of angle <2 + 5
So the measure of angle <2 is 4x - 5.
Next, we know that the measures of all angles in a triangle must add up to 180 degrees.
Therefore, we have:
x + (4x - 5) + measure of angle <3 = 180
Expanding and simplifying:
5x - 5 + measure of angle <3 = 180
5x + measure of angle <3 = 185
5x = 185
Finally, solving for x:
x = 37
So the measure of angle <1 is 37 degrees, and the measure of angle <2 is 4 * 37 - 5 = 143 degrees. The measure of angle <3 is 185 - 5x = 185 - 5 * 37 = 55 degrees.
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determine which approach of assigning probabilitise is the most appropriate. - probability of having a snow on christmas - probability of getting a red color if you play on multicolor roulette - probability of catalonia becoming an independent state - probability of being involved in a car accident
The most appropriate approach of probability to determine the probability of having a snow on Christmas is Relative frequency approach or Empirical probability.
The Empirical probability, relative frequency, or experimental probability of an event is the ratio of the number of outcomes in which a specified event occurs to the total number of trials, not in a theoretical sample space but in an actual experiment.
The most appropriate approach of probability to determine the probability of getting a red colour if you play on multicolour roulette is Classical approach of probability.
In classical probability, all the outcomes have equal odds of happening. For example, rolling a dice or tossing a coin. The formula of classical probability is as follows: P(A)= f/N; where, P(A)= classical probability, f= frequency or the number of favourable outcomes and N= Number of total possible outcomes.
The most appropriate approach of probability to determine the probability of Catalonia becoming an independent state is Subjective probability.
Subjective probability is a type of probability derived from an individual's personal judgment or own experience about whether a specific outcome is likely to occur. It contains no formal calculations and only reflects the subject's opinions and past experience.
The most appropriate approach of probability to determine the probability of being involved in a car accident is Relative frequency approach or Empirical probability.
The Empirical probability, relative frequency, or experimental probability of an event is the ratio of the number of outcomes in which a specified event occurs to the total number of trials, not in a theoretical sample space but in an actual experiment.
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What are the zeros of this function?
Answer:
B
Step-by-step explanation:
the zeros are the values of x on the x- axis where the graph crosses.
the graph crosses the x- axis at x = 3 and x = 6
then
the zeros are x = 3 and x = 6
When you
make a stem-and-leaf plot for the data set
5.6, 5.4, 4.1, 3.2, 4.7, 3.9, which place value
will the stems represent? Which place
value will the leaves represent?
The values on the stem are {5, 5, 4, 3, 4, 3} and the leaf of the data set is represented by {6, 4, 1, 2, 7, 9}.
What is stem and leaf plot?A stem and leaf plot, also known as a stem and leaf diagram, is a way to arrange data so that it is simple to see how frequently various sorts of values occur. It is a graph that displays ordered numerical data. A stem and a leaf are divided into each piece of data.
A stem and leaf plot is shown as a customized table with the first or final digit of each data value divided into a stem and the remaining digit in a leaf.
According to the stem leaf plot the first digit is the stem and the second digit is the leaf.
Hence, the values on the stem are {5, 5, 4, 3, 4, 3} and the leaf of the data set is represented by {6, 4, 1, 2, 7, 9}.
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2.1 Simplify a) 250 x (200+320)
Step-by-step explanation:
first open the bracket
200+320=520
then multiple the answer with 250
thus: 250×520=130,000
130,000
Step-by-step explanation:
first calculate the bracket 200 + 320 =520
than multiply it by 250. 250 x 520 = 130,000
find all radicals expressions that are equivalent for 5 (2/3)
is this true or false? square root of n less or equal than log subscript 2 open parentheses n cubed close parentheses space space f o r space a l l space n space greater or equal than 4 true false
For all n that is higher than or equal to 4, this statement is true.
By taking the cubes of both sides of the inequality, we can demonstrate this.
log2(n3) = [tex]3\sqrt{n}[/tex]
n^(3/2) <= 3 * log2(n) (n)
Since log2(n) > 2 for n >= 4, we can write:
3 * 2 * (log2(n)) = 3 * n where n(3/2) = 3 * log2(n)
This suggests that:
[tex]\sqrt{n} =( \frac{3}{n{log 2}} + n) (n)[/tex]
We come to the conclusion that the square root of n will eventually be less than or equal to log2(n3) for all n higher than or equal to 4 since the right-hand side of this inequality approaches zero as n goes to infinity. The assertion is accurate as a result.
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Use the graph of the number of gallons of lemonade in a container, y, after drinking x glasses of lemonade.
The graph states that there are 2 number of gallons of lemonade in a container, y, after drinking 12 glasses of lemonade.
How to interpret a graph?
The horizontal scale across the bottom and the vertical scale along the side tell us how much or how many. The points or dots on the graph show us the facts. The lines connecting the points give estimates of the values between the points.
since , it is a decreasing graph because it has a negative slope . Therefore , as no of glasses increases the gallons numbers decreases.
Hence , the graph states that there are 2 number of gallons of lemonade in a container, y, after drinking 12 glasses of lemonade.
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Answer:
no run hide
Step-by-step explanation:
hide run boo
While playing a game of chance, Mei rolled a regular six-sided die 100 times and noticed that it landed on the number 4 exactly 48 times. What could Mei conclude about the die?
We are 90% confident that the true proportion of times the die would land on the number 4 is between 0.398 and 0.562. Since this includes 0.5, the die appears to be fair.
We are 90% confident that the true proportion of times the die would land on the number 4 is between 0.398 and 0.562. Since this is much greater than 1 out of 6, the die appears to be unfair.
We are 90% confident that the true proportion of times the die would land on the number 4 is between 0.382 and 0.578. Since this is much greater than 1 out of 6, the die appears to be unfair.
We are 90% confident that the true proportion of times the die would land on the number 4 is between 0.382 and 0.578. Since this includes 0.5, the die appears to be fair.
We draw the conclusion that perhaps the actual probability of the die falling on the 4th position is between 0.398 and 0.562, with a 90% confidence level. The die appears to be fair since this contains 0.5.
What is probability and example?It is predicated on the probability that something might happen. The concept of probability relies mainly on the justification for probability. A coin is tossed, for instance, and the hypothetical likelihood of receiving a head is 1 in 2.
What is the formula in probability?P(A) = f / N determines probability, which quantifies the possibility of an event happening. Probability and odds are related, but probability is necessary for odds to exist. Prior to calculating the likelihood that an event will occur, probability is required.
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It is given that the volume of the cylinder and the cuboid are the same. Find the value of x and give your answer correct to two decimal places.
who can help me pls
Answer: Sure, I can help you with that!
Let's assume that the height of the cylinder is h and its radius is r. The volume of the cylinder can be calculated using the formula:
V = πr^2h
Similarly, let's assume that the length, width and height of the cuboid are l, w and h respectively. The volume of the cuboid can be calculated using the formula:
V = lwh
As the volume of the cylinder and the cuboid are the same, we can set the two expressions equal to each other:
πr^2h = lwh
Now, let's assume that the radius of the cylinder is equal to the length of the cuboid (r = l). This means that:
πl^2h = lwh
Solving for h, we get:
h = (πl^2)/w
Finally, substituting the value of h back into the original equation:
πr^2h = πl^2h = lwh
πr^2 = lwh/w = lw
r^2 = lw
r = sqrt(lw)
So, the value of x (the radius of the cylinder) can be found by knowing the length (l) and width (w) of the cuboid. To two decimal places, x = sqrt(lw).
Step-by-step explanation:
Solve the equation for x (0 ≤ x ≤ 2π)
cos²x + sin x = 1
To solve the equation cos²x + sin x = 1, we can use the trigonometric identity cos²x = 1 - sin²x. By substituting this identity into the equation, we get:
1 - sin²x + sin x = 1
Combining like terms, we get:
1 - sin²x = 0
Solving for sin x, we get:
sin x = 1
However, the sine function has a range of [-1, 1], so the only solution in the interval [0, 2π] is sin x = 1, which corresponds to x = π/2. So the solution to the equation cos²x + sin x = 1 in the interval [0, 2π] is x = π/2.
how many sides does a regular polygon have if each interior angle measures 172
A regular polygon with an interior angle of 172 degrees has 20 sides.
The formula to find the measure of an interior angle of a regular polygon is:
Interior angle = (n-2) x 180 / n
where n is the number of sides of the polygon.
Setting the equation equal to 172 and solving for n, we get:
172 = (n-2) x 180 / n
172n = 180n - 360
8n = 360
n = 45
Therefore, the regular polygon has 45 sides, but since the question asks for a regular polygon, all sides must be equal and all interior angles must be congruent. The only regular polygon that satisfies these conditions with an interior angle of 172 degrees is a regular 20-sided polygon.
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What statement is true about the distributions shown in the histograms below?
Histogram 1 is positively skewed, and Histogram 2 is symmetric.
Histogram 1 is negatively skewed, and Histogram 2 is symmetric
Histogram 1 is negatively skewed, and Histogram 2 is positively skewed.
Histogram 1 is positively skewed, and Histogram 2 is negatively skewed.
Histogram 1 is positively skewed, and Histogram 2 is symmetric, which is a true statement about the distributions represented by the histograms.
The Histogram: What Is It?An illustrated display of data points arranged into user-specified ranges is called a histogram. By taking several data points and organising them into logical ranges or bins, the histogram, which resembles a bar graph in appearance, condenses a data series into an easily understood graphic.
The purpose of a histogram?Among graphing tools, the histogram is widely used. It is utilised to encapsulate discrete or continuous data that is measured on an interval scale. It is frequently employed as a convenient way to highlight the key characteristics of the data distribution.
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Answer:
C) Histogram 1 is negatively skewed, and Histogram 2 is positively skewed.
Step-by-step explanation:
When most of the data on a histogram is gathered to the right, then the distribution is negatively skewed. If most of the data is gathered to the left, then the distribution is positively skewed.
Assuming you are going off of these Histograms:
C is the correct answer.
Let y represent the total cost of publishing a book (in dollars). Let x represent the number of the copies of the book printed. Suppose that x and y are related by the equation 15x+1100=y
a) What is the change in total cost for each book printed?
b) What is the cost to get started (Before any books are printed)?
a) The change in total cost for each book printed is $15.
b) The cost to get started (Before any books are printed) is $110
Overall, understanding the relationship between the number of copies printed and the total cost of publishing a book can help publishers and authors make important financial decisions.
a) The change in total cost for each book printed is represented by the slope of the equation.
In this case, the equation is in slope-intercept form
=> y = mx + b, where m is the slope and b is the y-intercept.
The slope of the equation 15x+1100=y is 15.
This means that for every additional book printed (x), the total cost (y) will increase by $15.
So, the change in total cost for each book printed is $15.
b) The cost to get started, before any books are printed, is represented by the y-intercept of the equation. In this case, the y-intercept is 1100.
This means that the cost to get started, before any books are printed, is $1100.
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I need to find the answer to this
Answer:
73°
Step-by-step explanation:
Vertical angles are congruent. They have the same measurement.
(25 POINTS IF YOU GET THIS RIGHT AND BRAINLIST.) Answer the following questions using 4 complete sentences. Find the area of the figure below. How did you find the area? Explain your steps using complete sentences.
Answer: 22 units²
Step-by-step explanation:
Just count the squares, its faster than breaking this into individual quadrilaterals.
22 squares, so the Area is 22 units²
i need answers to these fast!!
Answer: 4.) 9.4 inches, 5.) 12.6 inches
Step-by-step explanation:
4.) So basically one revolution is going around a circle which will be finding the circumference. The equation to finding the circumference is (2)x(pi)x(radius) so if the diameter is 3 inches then half of that is 1.5 inches which is the radius. Multiply 1.5 times pi and 2 which is 9.4 inches.
5.) Same thing multiply the radius which is 2 times 2 and pi. The answer is 12.6.
complete the equation below by completing the square. x^2+6x+9=2
Answer:-3, 2
Step-by-step explanation:
PLEASE HELP ME SOLVE THESE!!!
(if I have answers in the answer box in the photo please ignore the answer I have in it)
Answer:
1. The volume of the composite figure is 10,164 [tex]cm^3[/tex].
2. The measure of ∠BCM is 59°.
3. The area of the given figure is 823.5 [tex]in^2[/tex].
4. The area of the given figure is 60 [tex]yd^2[/tex].
5. The area of the following figure is 22.5 [tex]m^2[/tex].
Step-by-step explanation:
1. In order to make finding the composite figure's volume easier, we can separate the figure into two rectangular prisms, find the volume of each, and add them together. If we make a horizontal cut across the top of the large rectangular prism, we would have two rectangular prisms: One with the dimensions 23 cm × 10 cm × 42 cm, and one with the dimensions 3 cm × 4 cm × 42 cm. Their respective volumes would be 9,660 [tex]cm^3[/tex] and 504 [tex]cm^3[/tex]. Therefore, the composite figure's volume is 9,660 + 504 = 10,164 [tex]cm^3.[/tex]
2. As ∠BCH and ∠MCD are vertical angles, we can conclude that 4g + 109 = 5g + 106. Based on this information, g is equivalent to 3, meaning both ∠BCH and ∠MCD have an angle measure of 121°. Since both angles form a straight angle with ∠BCM, we know that 121° plus the angle measure of ∠BCM is equivalent to 180°. Therefore, we can conclude that ∠BCM = 180 - 121 = 59°.
3. In order to make finding the area of the given figure easier, we can split the figure into three shapes: two rectangles and a triangle. The area of the large rectangle is 12 × 54 = 648 [tex]in^2[/tex], the area of the smaller rectangle is 12 × 9 = 108 [tex]in^2[/tex], and the area of the triangle is 15 × 9 × [tex]\frac{1}{2}[/tex] = 67.5 [tex]in^2[/tex]. Therefore, the area of the entire figure would be 648 + 108 + 67.5 = 823.5 [tex]in^2[/tex].
4. Like questions 1 and 3, we can cut the figure into a triangle, a rectangle, and a parallelogram in order to find the entire area easier. The area of the rectangle is 11 × 4 = 44 [tex]yd^2[/tex], and the area of the triangle is 5 × 4 × [tex]\frac{1}{2}[/tex] = 10 [tex]yd^2[/tex]. As for the parallelogram, it's important to note that in order to find the area of a parallelogram, you only need to multiply the length and the height together as you would for a rectangle. This is because you can cut any parallelogram and reshape it into a rectangle with the same dimensions, therefore the area of the parallelogram would be 3 × 2 = 6 [tex]yd^2[/tex]. Lastly, the area of the entire given figure would be 44 + 10 + 6 = 60 [tex]yd^2[/tex].
5. Lastly, we are given a triangle and asked to find its area. An important information to keep in mind is that as long as you know a base length and the vertical height to that corresponding side, the formula to calculate the area of a triangle would still be [tex]\frac{1}{2} bh[/tex]. In the given triangle, the base length is 9 meters, and the vertical height is 5 meters. Therefore, the area of the following figure would be 22.5 [tex]m^2[/tex].
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the probability that anthony is on time for work is 0.90. the probability that anthony takes the train to work is 0.80. given that anthony takes the train to work, the probability that he is on time is 0.95. what is the probability that anthony is on time for work and takes the train?
The probability that Anthony is on time for work and takes the train is 0.76.
What is probability?
The probability of an occurrence is a figure that represents how likely it is that the event will take place. In terms of percentage notation, it is expressed as a number between 0 and 1, or between 0% and 100%. The higher the likelihood, the more likely it is that the event will take place.
Here, we have
Given: the probability that Anthony is on time for work is 0.90. the probability that Anthony takes the train to work is 0.80. given that Anthony takes the train to work, the probability that he is on time is 0.95.
We let
A: Anthony being on time for work
B: Anthony will take the train to work
P(A) = 0.9
P(B) = 0.8
P(A/B) = 0.95
P(Anthony is on time for work and takes the train):
P(A∩B) = P(A/B). P(B)
P(A∩B) = 0.95×0.8
P(A∩B) = 0.76
Hence, the probability that Anthony is on time for work and takes the train is 0.76.
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How does deforestation increase the warming of Earth?
A. It releases more oxygen into the atmosphere.
B. It increases the presence of methane in the atmosphere.
C. It decreases the removal of carbon dioxide from the atmosphere.
D. It decreases the production of ozone in the atmosphere.
Answer:
C. it decreases the removal of carbon dioxide from the atmosphere
Answer:
Step-by-step explanation:
it decreases the production of ozone in the atmosphere
question 4
help me asap
The unknown angle in the cyclic quadrilateral is as follows:
m∠B = 121 degrees.
How to find angles in a cyclic quadrilateral?In a cyclic quadrilateral, the sum of a pair of opposite angles is 180° (supplementary). The sum of angles in a cyclic quadrilateral is 360 degrees.
Therefore, let's find the angle m∠B in the cyclic quadrilateral.
m∠D = 59 degrees
m∠A = 33 degrees
Therefore,
m∠B = 180 - m∠D
This is because the angle m∠B is opposite to the angle m∠D.
Hence,
m∠B = 180 - 59
m∠B = 121 degrees.
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write 70a-84b+20ab-24b^2 as a product
Answer:
2 • (10ab + 35a - 12b2 - 42b)
Step-by-step explanation:
(20ab + 70a - 84b) - (23•3b2)
20ab + 70a - 24b2 - 84b =
2 • (10ab + 35a - 12b2 - 42b)
A bag contains three blue counters and four yellow counters. Two counters are removed without replacement and X is the number of blue counters removed.
This is a probability problem. To find the probability of removing two blue counters, we need to calculate the number of possible outcomes of removing two blue counters out of seven counters (3 blue and 4 yellow).
The number of possible outcomes of removing two blue counters is 3C2 = 3! / (2! * (3-2)!) = 3.
So, the probability of removing two blue counters is 3/7C2 = 3/21.
To find the probability of X being equal to 2, we need to calculate the probability of removing two blue counters.
Therefore, the probability of X being equal to 2 is 3/21.
What is the light collecting area (aperture), in [m2], of a telescope with the primary mirror diameter: 50 [cm]?
The area of the aperture storing light is 0.196 [tex]m^{2}[/tex].
What are shapes?Mathematical figures which have a set of pre defined properties are known as shapes. For example, Square shape is a mathematical figure who has four sides and all of them are equal in length and all the four corner of square have an angle of 90 degree. Similarly if there a figure who has been formed by the help of four lines of equal length but the corners are not 90 degrees then it will be Rhombus and not Square.
Now for the given question:
Diameter of the mirror=50 cm
we convert dia. unit in meter as area is asked in meter.
Dia.= [tex]\frac{50}{100}[/tex]
= [tex]\frac{1}{2}[/tex]
Area of a circle=π× [tex](\frac{dia}{2} )^{2}[/tex]
=π×[tex](\frac{1}{4} )^{2}[/tex]
Area= π/16
π=3.14
Area=[tex]\frac{3.14}{16}[/tex]
= 0.196 [tex]m^{2}[/tex]
Hence area of the aperture is 0.196 [tex]m^{2}[/tex].
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Ryan purchased 3 ties and 4 shirts for $500 Earl purchased 6 ties and 7 shirts at the same store for $920.00. What is the total cost of 1 tie and 1 shirt .? Show working
Ryan purchased 3 ties and 4 shirts for $500 Earl purchased 6 ties and 7 shirts at the same store for $920.00 then the total cost of 1 tie and 1 shirt is $153.33.
What is system of equations?
A system of equations is a set of two or more equations that are solved simultaneously to find the values of the variables that satisfy all the equations in the system. The solution of the system is the set of values of the variables that satisfy all the equations. There are different methods to solve a system of equations, such as substitution, elimination, and matrix methods.
Let x be the cost of 1 tie and y be the cost of 1 shirt.
From the problem, we can set up a system of equations:
3x + 4y = 500 (equation 1)
6x + 7y = 920 (equation 2)
To solve for x and y, we can use elimination method. Multiply equation 1 by 2 and subtract it from equation 2:
6x + 7y = 920
(6x + 8y = 1000)
-y = -80
Therefore, y = 80. We can substitute y = 80 into equation 1:
3x + 4(80) = 500
Simplifying the equation, we get:
3x = 220
So, x = 220/3 = 73.33 (rounded to two decimal places).
Therefore, the total cost of 1 tie and 1 shirt is $73.33 + $80 = $153.33.
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